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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
| 3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
| 4 // met: | 4 // met: |
| 5 // | 5 // |
| 6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
| 7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
| 8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
| 9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
| 10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
| 11 // with the distribution. | 11 // with the distribution. |
| 12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
| 13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
| 14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
| 15 // | 15 // |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | 27 |
| 28 #include <stdlib.h> | 28 #include <stdlib.h> |
| 29 #include <utility> |
| 29 | 30 |
| 30 #include "v8.h" | 31 #include "v8.h" |
| 31 | 32 |
| 32 #include "compilation-cache.h" | 33 #include "compilation-cache.h" |
| 33 #include "execution.h" | 34 #include "execution.h" |
| 34 #include "factory.h" | 35 #include "factory.h" |
| 35 #include "macro-assembler.h" | 36 #include "macro-assembler.h" |
| 36 #include "global-handles.h" | 37 #include "global-handles.h" |
| 37 #include "stub-cache.h" | 38 #include "stub-cache.h" |
| 38 #include "cctest.h" | 39 #include "cctest.h" |
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| 375 | 376 |
| 376 // after gc, it should survive | 377 // after gc, it should survive |
| 377 heap->CollectGarbage(NEW_SPACE); | 378 heap->CollectGarbage(NEW_SPACE); |
| 378 | 379 |
| 379 CHECK((*h1)->IsString()); | 380 CHECK((*h1)->IsString()); |
| 380 CHECK((*h2)->IsHeapNumber()); | 381 CHECK((*h2)->IsHeapNumber()); |
| 381 CHECK((*h3)->IsString()); | 382 CHECK((*h3)->IsString()); |
| 382 CHECK((*h4)->IsHeapNumber()); | 383 CHECK((*h4)->IsHeapNumber()); |
| 383 | 384 |
| 384 CHECK_EQ(*h3, *h1); | 385 CHECK_EQ(*h3, *h1); |
| 385 global_handles->Destroy(h1.location()); | 386 GlobalHandles::Destroy(h1.location()); |
| 386 global_handles->Destroy(h3.location()); | 387 GlobalHandles::Destroy(h3.location()); |
| 387 | 388 |
| 388 CHECK_EQ(*h4, *h2); | 389 CHECK_EQ(*h4, *h2); |
| 389 global_handles->Destroy(h2.location()); | 390 GlobalHandles::Destroy(h2.location()); |
| 390 global_handles->Destroy(h4.location()); | 391 GlobalHandles::Destroy(h4.location()); |
| 391 } | 392 } |
| 392 | 393 |
| 393 | 394 |
| 394 static bool WeakPointerCleared = false; | 395 static bool WeakPointerCleared = false; |
| 395 | 396 |
| 396 static void TestWeakGlobalHandleCallback(v8::Isolate* isolate, | 397 static void TestWeakGlobalHandleCallback( |
| 397 v8::Persistent<v8::Value>* handle, | 398 const v8::WeakCallbackData<v8::Value, void>& data) { |
| 398 void* id) { | 399 std::pair<v8::Persistent<v8::Value>*, int>* p = |
| 399 if (1234 == reinterpret_cast<intptr_t>(id)) WeakPointerCleared = true; | 400 reinterpret_cast<std::pair<v8::Persistent<v8::Value>*, int>*>( |
| 400 handle->Reset(); | 401 data.GetParameter()); |
| 402 if (p->second == 1234) WeakPointerCleared = true; |
| 403 p->first->Reset(); |
| 401 } | 404 } |
| 402 | 405 |
| 403 | 406 |
| 404 TEST(WeakGlobalHandlesScavenge) { | 407 TEST(WeakGlobalHandlesScavenge) { |
| 405 i::FLAG_stress_compaction = false; | 408 i::FLAG_stress_compaction = false; |
| 406 CcTest::InitializeVM(); | 409 CcTest::InitializeVM(); |
| 407 Isolate* isolate = CcTest::i_isolate(); | 410 Isolate* isolate = CcTest::i_isolate(); |
| 408 Heap* heap = isolate->heap(); | 411 Heap* heap = isolate->heap(); |
| 409 Factory* factory = isolate->factory(); | 412 Factory* factory = isolate->factory(); |
| 410 GlobalHandles* global_handles = isolate->global_handles(); | 413 GlobalHandles* global_handles = isolate->global_handles(); |
| 411 | 414 |
| 412 WeakPointerCleared = false; | 415 WeakPointerCleared = false; |
| 413 | 416 |
| 414 Handle<Object> h1; | 417 Handle<Object> h1; |
| 415 Handle<Object> h2; | 418 Handle<Object> h2; |
| 416 | 419 |
| 417 { | 420 { |
| 418 HandleScope scope(isolate); | 421 HandleScope scope(isolate); |
| 419 | 422 |
| 420 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); | 423 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); |
| 421 Handle<Object> u = factory->NewNumber(1.12344); | 424 Handle<Object> u = factory->NewNumber(1.12344); |
| 422 | 425 |
| 423 h1 = global_handles->Create(*i); | 426 h1 = global_handles->Create(*i); |
| 424 h2 = global_handles->Create(*u); | 427 h2 = global_handles->Create(*u); |
| 425 } | 428 } |
| 426 | 429 |
| 427 global_handles->MakeWeak(h2.location(), | 430 std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234); |
| 428 reinterpret_cast<void*>(1234), | 431 GlobalHandles::MakeWeak(h2.location(), |
| 429 &TestWeakGlobalHandleCallback); | 432 reinterpret_cast<void*>(&handle_and_id), |
| 433 &TestWeakGlobalHandleCallback); |
| 430 | 434 |
| 431 // Scavenge treats weak pointers as normal roots. | 435 // Scavenge treats weak pointers as normal roots. |
| 432 heap->PerformScavenge(); | 436 heap->PerformScavenge(); |
| 433 | 437 |
| 434 CHECK((*h1)->IsString()); | 438 CHECK((*h1)->IsString()); |
| 435 CHECK((*h2)->IsHeapNumber()); | 439 CHECK((*h2)->IsHeapNumber()); |
| 436 | 440 |
| 437 CHECK(!WeakPointerCleared); | 441 CHECK(!WeakPointerCleared); |
| 438 CHECK(!global_handles->IsNearDeath(h2.location())); | 442 CHECK(!global_handles->IsNearDeath(h2.location())); |
| 439 CHECK(!global_handles->IsNearDeath(h1.location())); | 443 CHECK(!global_handles->IsNearDeath(h1.location())); |
| 440 | 444 |
| 441 global_handles->Destroy(h1.location()); | 445 GlobalHandles::Destroy(h1.location()); |
| 442 global_handles->Destroy(h2.location()); | 446 GlobalHandles::Destroy(h2.location()); |
| 443 } | 447 } |
| 444 | 448 |
| 445 | 449 |
| 446 TEST(WeakGlobalHandlesMark) { | 450 TEST(WeakGlobalHandlesMark) { |
| 447 CcTest::InitializeVM(); | 451 CcTest::InitializeVM(); |
| 448 Isolate* isolate = CcTest::i_isolate(); | 452 Isolate* isolate = CcTest::i_isolate(); |
| 449 Heap* heap = isolate->heap(); | 453 Heap* heap = isolate->heap(); |
| 450 Factory* factory = isolate->factory(); | 454 Factory* factory = isolate->factory(); |
| 451 GlobalHandles* global_handles = isolate->global_handles(); | 455 GlobalHandles* global_handles = isolate->global_handles(); |
| 452 | 456 |
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| 463 | 467 |
| 464 h1 = global_handles->Create(*i); | 468 h1 = global_handles->Create(*i); |
| 465 h2 = global_handles->Create(*u); | 469 h2 = global_handles->Create(*u); |
| 466 } | 470 } |
| 467 | 471 |
| 468 // Make sure the objects are promoted. | 472 // Make sure the objects are promoted. |
| 469 heap->CollectGarbage(OLD_POINTER_SPACE); | 473 heap->CollectGarbage(OLD_POINTER_SPACE); |
| 470 heap->CollectGarbage(NEW_SPACE); | 474 heap->CollectGarbage(NEW_SPACE); |
| 471 CHECK(!heap->InNewSpace(*h1) && !heap->InNewSpace(*h2)); | 475 CHECK(!heap->InNewSpace(*h1) && !heap->InNewSpace(*h2)); |
| 472 | 476 |
| 473 global_handles->MakeWeak(h2.location(), | 477 std::pair<Handle<Object>*, int> handle_and_id(&h2, 1234); |
| 474 reinterpret_cast<void*>(1234), | 478 GlobalHandles::MakeWeak(h2.location(), |
| 475 &TestWeakGlobalHandleCallback); | 479 reinterpret_cast<void*>(&handle_and_id), |
| 480 &TestWeakGlobalHandleCallback); |
| 476 CHECK(!GlobalHandles::IsNearDeath(h1.location())); | 481 CHECK(!GlobalHandles::IsNearDeath(h1.location())); |
| 477 CHECK(!GlobalHandles::IsNearDeath(h2.location())); | 482 CHECK(!GlobalHandles::IsNearDeath(h2.location())); |
| 478 | 483 |
| 479 // Incremental marking potentially marked handles before they turned weak. | 484 // Incremental marking potentially marked handles before they turned weak. |
| 480 heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask); | 485 heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask); |
| 481 | 486 |
| 482 CHECK((*h1)->IsString()); | 487 CHECK((*h1)->IsString()); |
| 483 | 488 |
| 484 CHECK(WeakPointerCleared); | 489 CHECK(WeakPointerCleared); |
| 485 CHECK(!GlobalHandles::IsNearDeath(h1.location())); | 490 CHECK(!GlobalHandles::IsNearDeath(h1.location())); |
| 486 | 491 |
| 487 global_handles->Destroy(h1.location()); | 492 GlobalHandles::Destroy(h1.location()); |
| 488 } | 493 } |
| 489 | 494 |
| 490 | 495 |
| 491 TEST(DeleteWeakGlobalHandle) { | 496 TEST(DeleteWeakGlobalHandle) { |
| 492 i::FLAG_stress_compaction = false; | 497 i::FLAG_stress_compaction = false; |
| 493 CcTest::InitializeVM(); | 498 CcTest::InitializeVM(); |
| 494 Isolate* isolate = CcTest::i_isolate(); | 499 Isolate* isolate = CcTest::i_isolate(); |
| 495 Heap* heap = isolate->heap(); | 500 Heap* heap = isolate->heap(); |
| 496 Factory* factory = isolate->factory(); | 501 Factory* factory = isolate->factory(); |
| 497 GlobalHandles* global_handles = isolate->global_handles(); | 502 GlobalHandles* global_handles = isolate->global_handles(); |
| 498 | 503 |
| 499 WeakPointerCleared = false; | 504 WeakPointerCleared = false; |
| 500 | 505 |
| 501 Handle<Object> h; | 506 Handle<Object> h; |
| 502 | 507 |
| 503 { | 508 { |
| 504 HandleScope scope(isolate); | 509 HandleScope scope(isolate); |
| 505 | 510 |
| 506 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); | 511 Handle<Object> i = factory->NewStringFromAscii(CStrVector("fisk")); |
| 507 h = global_handles->Create(*i); | 512 h = global_handles->Create(*i); |
| 508 } | 513 } |
| 509 | 514 |
| 510 global_handles->MakeWeak(h.location(), | 515 std::pair<Handle<Object>*, int> handle_and_id(&h, 1234); |
| 511 reinterpret_cast<void*>(1234), | 516 GlobalHandles::MakeWeak(h.location(), |
| 512 &TestWeakGlobalHandleCallback); | 517 reinterpret_cast<void*>(&handle_and_id), |
| 518 &TestWeakGlobalHandleCallback); |
| 513 | 519 |
| 514 // Scanvenge does not recognize weak reference. | 520 // Scanvenge does not recognize weak reference. |
| 515 heap->PerformScavenge(); | 521 heap->PerformScavenge(); |
| 516 | 522 |
| 517 CHECK(!WeakPointerCleared); | 523 CHECK(!WeakPointerCleared); |
| 518 | 524 |
| 519 // Mark-compact treats weak reference properly. | 525 // Mark-compact treats weak reference properly. |
| 520 heap->CollectGarbage(OLD_POINTER_SPACE); | 526 heap->CollectGarbage(OLD_POINTER_SPACE); |
| 521 | 527 |
| 522 CHECK(WeakPointerCleared); | 528 CHECK(WeakPointerCleared); |
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| 3621 for (int i = 0; i < 4; i++) { | 3627 for (int i = 0; i < 4; i++) { |
| 3622 heap->CollectAllGarbage(false); | 3628 heap->CollectAllGarbage(false); |
| 3623 } | 3629 } |
| 3624 | 3630 |
| 3625 // The site still exists because of our global handle, but the code is no | 3631 // The site still exists because of our global handle, but the code is no |
| 3626 // longer referred to by dependent_code(). | 3632 // longer referred to by dependent_code(). |
| 3627 DependentCode::GroupStartIndexes starts(site->dependent_code()); | 3633 DependentCode::GroupStartIndexes starts(site->dependent_code()); |
| 3628 int index = starts.at(DependentCode::kAllocationSiteTransitionChangedGroup); | 3634 int index = starts.at(DependentCode::kAllocationSiteTransitionChangedGroup); |
| 3629 CHECK(!(site->dependent_code()->is_code_at(index))); | 3635 CHECK(!(site->dependent_code()->is_code_at(index))); |
| 3630 } | 3636 } |
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